Power unit



L. K. PARK POWER UNIT Sept. 29, 1931.

Filed Aug. 2, 1926 4 Sheets-Sheet 1 A TTORNEYJ L. K. PARK POWER UNITSept. 2-9, 1931.

Filed Aug. 2, 1926 4 Sheets-Sheet 2 4 a Q \v v m 0 L om 1 3 IRA I w m\ CL L L. K. PARK POWER UNIT Sept. 29, 1931.

1926 4 Sheets-Sheet 3 Filed Aug. 2

A TTORNE Y.

Sept. 29, 1931. K. PARK 1,825,087

POWER UNIT Filed Aug- 2, 1926 4 Sheets-Sheet 4 42 I V I Jig EN R- rSATTORNEYG UNITED STATES PATENT OFFICE LINN K. PARK, OF HOUSTON, TEXASPOWER UNIT Application filed August 2, 1826. Serial No. 128,726.

This invention relates to new and useful improvements in a power unit.

One object of the invention is to provide an apparatus of the characterdescribed embodying a novel type of transmission whereby one or moreinternal combustion motors may be utilized to deliver power.

Another object of the invention is to provide an apparatus of thecharacter described whereby a single internal combustion motor, or aplurality of such motors coupled together, may be utilized to deliverpower in either direction without reversing the motor, or motors, and atvariable speeds.

A further feature of the invention is to provide an apparatus of thecharacter described specially adapted for usein carrying on welldrilling and producing operations, and utilizing one or more internalcombustion motors, as a source of power.

A still further feature of the invention resides in a novel type oftransmission employed.

With the above and other objects in view this invention has particularrelations to certain novel features of construction, operation andarrangement of parts, an example of which is given in this specificationand illustrated in the accompanying drawings, wherein Figure 1 shows aside elevation of the apparatus.

Figure 2 shows a plan view thereof.

Figure 3 shows a side elevation of the transmission case, enclosing thetransmission employed.

Figure 4 shows a vertical sectional view thereof, taken on the line 44of Figure 5.

Figure 5 shows a horizontal sectional view thereof, and

Figure 6 shows a fragmentary sectional view thereof, taken on the line6-6 of Figure 4.

Referring now more particularly to the drawings, wherein like numeralsof reference designate similar parts in each of the figures the numeral1 designates a derrick, of conventional form, having the floor 2.Adjacent the derrick there is a suitable foundation 3, whereon theapparatus may be mounted.

The numerals 4 and 5 designate suitable internal combustion motors"mounted on the foundation and having the power deliver shafts 6 and 7which may be clutched wit and released from said motor by means of theconventional clutches commonly incorporated into motors of this type.

The numeral 8 designates the driving shaft of the transmission,designated, as a whole by the numeral 9 and the numeral 10 designatesthe ultimate driven shaft of said transmission which constitutes, also,the driving shaft for transmitting rotation to the draw works line shaft11. This line shaft is rotatabl mounted in the derrick 1 and has a sprocet wheel 12 fixed thereon and aligned with a corresponding sprocketwheel 13 which is fixed on the shaft 10. A sprocket chain 14 operatesover said sprocket wheels and transmits rotation from the latter to theformer. The line shaft 11 may be operatively connected with the drawworks drum 15, in the usual manner, said drum being provided forhandling the cable (not shown) through which loads are lifted, loweredand handled, in drilling operations, in the usual manner. The usualrotary drilling machine (not shown) may also be driven from said lineshaft 11 in the usual way.

The shaft 6 is aligned with the shaft 8 and is connected therewiththrough a flexible coupling, as 16, and adjacent said coupling there isa sprocket wheel 17 fixed on the shaft 8 and aligned with a similarsprocket wheel 18, loosely mounted on the shaft 7 A sprocket chain 19operates over the sprocket wheels 17 and 18.

Loosely mounted on the shaft 7 there is a sprocket wheel 20 which isaligned with a sprocket wheel 21 fixed on the drive shaft 22 of the pump23. This pump is of con-' ventional construction and is mounted on thefoundation 3 and utilized for pumping water down into the well bore,while drilling, or for other purposes connected with drillingoperations. A sprocket chain 24 operates over the sprocket wheels 20 and21 and drives said pump. i

Splined on the shaft 7 between the sprockets 18 and 20 there are twoclutches 25 adapted to be engaged with said sprockets between which theyare located.

When one clutch is engaged with the sprocket 18 the motors 4 and 5 arethereby coupled to ether and both deliver power to the shaft 8, and ifthe other clutch 25 now be engaged with the sprocket 20 .the pump willbe driven from both motors 4 and 5. By suitably shifting the clutches,the power of either or both motors may be delivered in either direction.

The numeral 26 designates the gear box of the transmission, in which theshafts 8 and 10 are mounted. This box is formed of upper and lowersections whose abutting parts constitute outwardly turned flangessuitably bolted together and the top of the box has the removable coverplates 27 and 28 by the removal of which access may be gained into theinterior of the box. box is formed fluid tight so that a lubricant maybe retained therein to lubricate the transmission gears and shaftbearings.

The shafts 8 and 10 are mounted to rotate in suitable bearings in saidbox and transversely disposed therein and spaced apart. Between themthere is a transverse counter shaft 29 which is mounted to rotate insuitable end bearings, within said box, and

fixed upon this shaft, inside of its hearing, are the direct and reversetransmission gears 30, 31 of the herringbone type. Also fixed on theshaft 29 are the high and low speed spur gears 32 and 33 which are inmesh with corresponding gears 34 and 35 loosely mounted on the drivenshaft 10.

Loosely mounted on the shaft 8 are the disc clutch members 36 and 37 fordirect and reverse drive, respectively, having the extended hubs 38 and39 on which the driving gears 40 and 41 respectively are fixed, theformer of which is in mesh with the direct drive gear 30 and the latterof which is in mesh with an intermediate gear 42, which is mounted onthe stub shaft 43, anchored to the gear box 26, and is in mesh with thereverse gear 31. Disc clutches 44 and 45 are splined on the shaft 8between the clutch members 36 and 37 and are operable through the clutchoperating arm 46 which is fixed to the lower end of the shaft 47. Theupper end of this shaft has the arm 48 fixed thereto to the free end ofwhich one end of the clutch shifting rod 49 is pivotally connected.Through the manipulation of this rod the clutches 44, 45, may besimultaneously shifted to alternatively clutch either clutch member 36,or 37, with the shaft 8 and to simultaneously release the other clutchmember from said shaft, so that said shaft 8 may be driven in eitherdirection, at the will of the operator.

Splined on the shaft 10, between the gear The 34 and 35, is the jawclutch 50 which is Shiftable into engagement with either of the clutchmembers 51 or 52 into which the adjacent ends of the hubs of the gears34, 35, are formed. The clutch 50 may be shifted through the arms 53,53, which are fixed to the lower end of the clutch shifting shaft 54 andwhose free ends are pivoted to said clutch 50. The upper end of theshaft 54 has an arm 55 fixed thereto whose free end is pivotallyconnected to one end of the clutch shifting rod 56 and through this rodthe clutch 50 may be shifted by the operator to vary the speed of theshaft 10. In lifting light loads about the derrick, or in driving therotary drilling machine a high speed is desirable but in lifting heavyloads, as in withdrawing the drill stem from, or letting it down into,the bore a low speed is preferable.

In ordinary drilling operations only one motor, as 4 is connected withthe draw works, while the other motor, as 5, is 0011- nected to anddrives the pump 23 to supply fluid for flushing out the bore. In casemore power be required for driving the draw works, or for other workbeing accomplished, the clutch 25 may be shifted into engagement withthe sprocket wheel 18 and both motors 4 and 5 coupled together for thework required.

The outer ends of the shafts 8 and 10 are extended beyond the gear boxand thus adapted to be connected to any other work desired, as forexample well pumping or other similar work. Through the apparatusdescribed internal combustion motors may be employed in well drilling orpumping operations, to take the place of steam engines now commonlyemployed and through the transmission, embodied in said apparatus, therequired flexibility is obtained for applying the power delivered froman internal combustion motor to the work to be accomplished.

\Vhat I claim is 1. An apparatus of the character described including apair of motors each having a driving shaft, a pair of sprocket wheelsloosely mounted on one of said shafts, means for alternatelyclutchingsaid sprocket wheels with said shaft, a sprocket chain in drivingrelation with each sprocket wheel, a sprocket wheel fixed on the shaftof the other motor over which one of said sprocket chains operate, adriven mechanism operatively connected with said last mentioned shaftand a driven mechanism including a sprocket wheel over which the othersprocket chain operates.

2. An' apparatus of the character described inclnding a pair of motors,each having a driving shaft, a pair of driving elements loosely mountedon one of said shafts, means for alternately clutching said drivingelements with said shaft, a ower transmitting element in driving reatlon with each of said driving elements, a driving element fixed on theshaft of the other motor with which one of said power transmittingelements is operatively connected, a driven mechanism operativelyconnected with said last mentioned shaft and a driven mechanismincluding a driving element with which the other power transmittingelement is operatively connected.

3. Apparatus for driving well drilling mechanism including motors, eachhaving a driving shaft, a pair of driving elements operatively connectedwith one of said shafts, means for alternatively clutching said drivingelements with their corresponding shaft, a power transmitting element ina driving relation with each of said driving elements, a driving elementconnected to the shaft of another motor with which one of saidtransmitting elements may be connected, a driven mechanism operativelyconnected with the driving element of said other motor and connected to,and adapted to drive the draw works of said well drilling mechanism.

4. An apparatus of the character described including a pair of motors,each having a driving shaft, a pair of driving elements operativelyconnected with one of said shafts, means for alternately clutching saiddriving elements with said shaft, a power transmitting element indriving relation with each of said driving elements,

a driving element connected to the shaft of the other motor with whichone of said power transmitting elements may be operatively connected, adriven mechanism operatively connected with said last mentioned shaftand another driven mechanism includ ing a driving element with which oneof said power transmitting elements is operatively connected.

5. Apparatus for driving a well drilling,

mechanism including a motor, a pair of driving elements operativelyconnected therewith, a driving means for the draw works, one of saidelements of said pair being operatively connected to said driving means,a slush pump, the other of said driving elements of said pair beingoperatively connected with said slush pump, and means for connectingeither or both of the driving elements to the motor.

In testimony whereof I have signed my name to this specification.

LINN K. PARK..

CERTIFICATE OF CORRECTION.

Patent No. 1,825,087.

Granted September 29, 1931, to

LINN K. PARK.

It is hereby certified that error apbeara in the above numbered patentrequiring correction as follows: In the drawings, Figure 2, shouldappear as shown below instead of as shown in the drawings;

and that the said letters Patent should he read with this correctiontherein that the one may conform to the record of the cue in the PatentOffice.

Siped ud aealed this 15th day of December, A. D. 1931.

' M. J. Moore.

Acting Cumin-inner of Patents.

